diff --git a/contracts/package-lock.json b/contracts/package-lock.json
index a678b08a..15dcb441 100644
--- a/contracts/package-lock.json
+++ b/contracts/package-lock.json
@@ -364,9 +364,9 @@
       }
     },
     "big-integer": {
-      "version": "1.6.48",
-      "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.48.tgz",
-      "integrity": "sha512-j51egjPa7/i+RdiRuJbPdJ2FIUYYPhvYLjzoYbcMMm62ooO6F94fETG4MTs46zPAF9Brs04OajboA/qTGuz78w=="
+      "version": "1.6.51",
+      "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.51.tgz",
+      "integrity": "sha512-GPEid2Y9QU1Exl1rpO9B2IPJGHPSupF5GnVIP0blYvNOMer2bTvSWs1jGOUg04hTmu67nmLsQ9TBo1puaotBHg=="
     },
     "bignumber.js": {
       "version": "9.0.1",
@@ -663,6 +663,11 @@
         "nearley": "2.19.1"
       },
       "dependencies": {
+        "big-integer": {
+          "version": "1.6.48",
+          "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.48.tgz",
+          "integrity": "sha512-j51egjPa7/i+RdiRuJbPdJ2FIUYYPhvYLjzoYbcMMm62ooO6F94fETG4MTs46zPAF9Brs04OajboA/qTGuz78w=="
+        },
         "jsonpath-plus": {
           "version": "5.0.2",
           "resolved": "https://registry.npmjs.org/jsonpath-plus/-/jsonpath-plus-5.0.2.tgz",
@@ -693,6 +698,13 @@
             "jsonpath-plus": "5.0.2",
             "moo": "0.5.0",
             "nearley": "2.19.1"
+          },
+          "dependencies": {
+            "big-integer": {
+              "version": "1.6.48",
+              "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.48.tgz",
+              "integrity": "sha512-j51egjPa7/i+RdiRuJbPdJ2FIUYYPhvYLjzoYbcMMm62ooO6F94fETG4MTs46zPAF9Brs04OajboA/qTGuz78w=="
+            }
           }
         },
         "jsonpath-plus": {
diff --git a/contracts/package.json b/contracts/package.json
index eef28794..70134c07 100644
--- a/contracts/package.json
+++ b/contracts/package.json
@@ -9,7 +9,7 @@
   "author": "Soumya Ghosh Dastidar",
   "license": "MIT",
   "dependencies": {
-    "big-integer": "^1.6.48",
+    "big-integer": "^1.6.51",
     "conseiljs": "5.0.8-1",
     "conseiljs-softsigner": "5.0.4-1",
     "ethereumjs-tx": "^2.1.2",